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Junior RAN Software Engineer, 5G NR NTN Test Terminal
On-site in Barcelona·Full-time·Added 12 days ago
Overview
Job details
Full-time hours
Per the ad.
Requirements
Have the right to work in Spain
Sateliot doesn't mention sponsorship in the ad.
Work in English
English is required, per the ad.
Work on-site in Barcelona
No relocation package mentioned.
University degree
“A degree in telecommunications, electronics or computer engineering, with solid C or C++ and Python for tooling.” — per the ad.
Pay & benefits
What you'll get
Real impact on one of Europe's most ambitious space projects.
Growth: we cover 50% of courses or master's degrees (up to 5% of your salary), plus Spanish and Catalan classes.
Health & balance: 50% on private health insurance and Urban Sports Club, a flexible schedule, and hybrid work, we focus on results, not hours.
Flexible Compensation: flexible compensation through Cobee (meal, transport, kindergarten).
A truly global team: 20+ nationalities building something genuinely new - and genuinely nice to work with. Great vibes, real teamwork.
A real welcome: a dedicated buddy from day one.
Life outside work: we organize leisure and sports activities both during and outside working hours - because great teams connect beyond the screen.
Catering: if you don't have time to cook, we partner with a catering company so a freshmeal is sorted, no need to think about it.
Parking: on-site parking at the office, with Sateliot covering 50% of the cost - plus free bike parking if you prefer to pedal in.
Requirements
What we're looking for
A degree in telecommunications, electronics or computer engineering, with solid C or C++ and Python for tooling.
Foundations in mobile radio protocols - LTE or 5G - and genuine willingness to work from the 3GPP specifications.
Something real you have built and can walk us through - a thesis, a personal project, an internship - explaining the design decisions you took and why.
Lab curiosity: comfortable around hardware, logs and software-defined radios, and happy to get your hands dirty.
Practical AI skills paired with the creative problem-solving to put them to work.
Nice to have
Academic or personal projects with open-source radio access software such as srsRAN or OpenAirInterface.
Linux and embedded development, or software-defined radio projects.
Interest in satellite communications and non-terrestrial networks.
Version control and CI practice beyond the classroom.
The role
Sateliot is a Barcelona-based satellite company with one goal: connect everything, everywhere. Founded in 2018, we've built the first satellite constellation that lets standard commercial devices communicate directly from space. Our technology bridges the gaps that terrestrial networks will never reach, bringing affordable and secure connectivity to industries, governments, and communities across the planet.
What you'll do
Build and extend our own 5G NR NTN test terminal software, paired with our 5G stack architect as your reviewer.
Own its test and validation pipeline: automation, continuous integration, regression runs and the analysis of what the results mean.
Drive integration step by step - terrestrial first, then satellite GEO and LEO over a software channel emulator, then over RF with a physical emulator.
Work AI-first: orchestrate AI-assisted development, and be able to explain and defend every line that ships.
Grow into the domain: this position is the path to becoming a radio access software engineer, with the mentoring to get there.
description
Learn more: https://sateliot.space/
Additional requirements
This role is lab-based and hands-on with hardware, so it is on-site: you will sit with the engineers you work with, at one of our engineering locations.
Our process includes a short practical exercise: you will solve a small problem using AI assistance and then walk us through the result and defend your choices.
How we work
We lead with humility, move fast, and take ownership. We collaborate without ego and measure ourselves by real impact, not titles or hierarchy. We hire people who already live these values.
About Sateliot
Sateliot is a Barcelona-based company operating in the space tech sector, specializing in low-Earth orbit (LEO) satellite connectivity for the Internet of Things (IoT). The company builds and operates a constellation of small satellites that provide global, continuous connectivity for devices in remote areas where terrestrial networks are unavailable, effectively creating a 'space-based' telecom operator. Sateliot's scale is that of a growth-stage startup, with a workforce of around 100 employees, and it has secured significant funding rounds to deploy its satellite constellation.
Sateliot's headquarters and main operations are in Barcelona, Spain, which is also the hub for its engineering, product, and business teams. The company's work culture is that of a fast-moving, deep-tech startup, with a strong emphasis on R&D and innovation. For international professionals, Sateliot offers a compelling opportunity to work on cutting-edge space technology in a European startup environment, with roles spanning from software and firmware engineering to AI and project management. The company is actively hiring for a variety of technical and non-technical positions, making it an accessible entry point for international talent looking to enter the space industry in Spain.
- Industry
- Space Tech
- Founded
- 2019
- Employees
- 50–200
- Headquarters
- Barcelona, Spain
- In Spain
- Barcelona
- Website
- sateliot.com
Good to know if you are moving
- Barcelona is the company's global HQ, so most roles are based there, offering a chance to live in a major Mediterranean tech hub.
- The company works in English, making it accessible for international professionals who do not speak Spanish.
- Sateliot is a deep-tech startup, so roles involve hands-on work on satellite communications, firmware, and AI, offering strong career development in a niche industry.
- The company has raised significant funding, indicating a stable runway and growth potential for early employees.
- Spain's space sector is emerging, and Sateliot is one of its most prominent startups, offering a unique opportunity to be in on the ground floor.
In their own words
About the company & team
Sateliot brings standard cellular connectivity from space, and develops key parts of its radio access technology in-house, test tooling included. Non-terrestrial networks are one of the most active areas in telecoms right now, and this is a chance to work on the radio itself rather than on top of it. As Junior RAN Software Engineer you will work on our 5G NR non-terrestrial test terminal side by side with a senior engineer who reviews what you write, and you will own the test and validation pipeline around it. The role is deliberately designed as an entry path into radio access software: we are looking for someone early in their career who is fast with AI-assisted development and rigorous about understanding what they ship.
Additional information
Sateliot is an Equal Opportunity Employer. Employment decisions are based on merit, qualifications, and business needs, without discrimination on the basis of any legally protected characteristic.
Location
Sateliot · Barcelona
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